1. J. Bookless and C. McInnes, Acta Astronaut. 62, 159 (2008).
2. A. P. Markeev, Libration Points in Celestial Mechanics and Cosmodynamics (Nauka, Moscow, 1978) [in Russian].
3. E. Polyakhova, A. Shmyrov, and V. Shmyrov, AIP Conf. Proc. 1959, 040016 (2018).
4. D. V. Shymanchuk and A. S. Shmyrov, Vestn. SPb. Univ., Ser. 10: Prikl. Mat., Inform., Prots. Upravl., No. 2, 76 (2013).
5. V. A. Shmyrov, Vestn. SPb. Univ., Ser. 10: Prikl. Mat., Inform., Prots. Upravl., No. 2, 193 (2005).